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Re: Bad performance of g++ on HP-UX???
- To: vanpraet at retarget dot com
- Subject: Re: Bad performance of g++ on HP-UX???
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Thu, 21 Oct 1999 12:59:32 -0600
- cc: gnu-gcc-bug at news3 dot Belgium dot EU dot net
- Reply-To: law at cygnus dot com
In message <199910211551.QAA02356@retarget.com>you write:
> With -fno-exceptions, the performance of g++-2.95 generated exectables on
> HP is now roughly the same as with the old HP CC (Version A.10.22) and
> new HP aC++ compilers (Version A.01.21).
If it is a modern PA machine and your code is FP intensive, you might try
-msched=8000 and/or -mpa-risc-2-0 to enable optimizations and ISA features
of modern machines. If your code doesn't have a lot of FP I doubt these
options will help all that much.
> P.S. Any detailed documentation somewhere (except for the source code ;-) )
> about how this iterative template instantiation works?
Not that I'm aware of.
jeff